[1] UCLA, David Geffen Sch Med, Jonsson Comprehens Canc Ctr, Santa Monica, CA USA
[2] Vall Hebron Univ Hosp, Barcelona, Spain
[3] Vall Hebron Inst Oncol VHIO, Barcelona, Spain
[4] Harvard Med Sch, Dept Med, Div Hematol & Oncol, Massachusetts Gen Hosp, Boston, MA USA
[5] Exelixis Inc, Alameda, CA USA
[6] Univ Pittsburgh Med Ctr UPMC, Dept Med, Div Hematol & Oncol, UPMC Hillman Canc Ctr, Pittsburgh, PA USA